Knack vs Google Sheets: Real-time bi-directional sync

On the URL https://www.knack.com/integrations/google-sheets-knack/

it states:

Real-Time Data Synchronization

Keep Google Sheets and Knack databases perfectly synchronized with bi-directional updates that ensure data consistency across both platforms automatically.

Does anyone know how to do this? I couldn’t figure it out. I basically want my databases in Knack and in Google Sheets to mirror each other, any change in one must be reflected on the other.